S8 is solid sulfur, there are 8 sulfur atoms bound together.
For instance, if you try to find the number of sulfur atoms in 27.1 g of molecular sulfur (S8), the set up would be this:
(27.1 g S8) x (1 mol S8/32.066 g S8) x (6.022 x 10^23 atoms/1 mole) = 5.09 x 10^23 atoms
*Notice how you still use the Atomic Mass of S, 32.066 amu and NOT 32.066 x 8
This is from Dr. Frazer's practice test :)
In the electron dot diagram for calcium, there are two dots shown, as calcium has two valence electrons.
Sodium and neon are both represented by Lewis dot diagrams, which show the valence electrons of the atoms. Oxygen is often represented by a Lewis structure diagram, which shows the arrangement of atoms and the sharing of electrons in a molecule.
Lithium: Li has 1 valence electron, so its Lewis dot diagram is Li: . Bromine: Br has 7 valence electrons, so its Lewis dot diagram is :Br:. Carbon: C has 4 valence electrons, so its Lewis dot diagram is :C:. Hydrogen: H has 1 valence electron, so its Lewis dot diagram is H: . Silver: Ag has 1 valence electron, so its Lewis dot diagram is Ag: . Oxygen: O has 6 valence electrons, so its Lewis dot diagram is :O:. Iron: Fe has 2 valence electrons, so its Lewis dot diagram is :Fe:. Potassium: K has 1 valence electron, so its Lewis dot diagram is K: . Oxygine: I'm not familiar with an element called "oxygine". It may be a misspelling of oxygen. If so, refer to oxygen's Lewis dot diagram above.
Two dots are shown in the electron dot diagram for calcium in group 2 and period 4 with 20 protons and 20 electrons.
valence model
six
six
six
six
A synonym for Lewis diagram is Lewis structure. It is a schematic representation of the bonding between atoms in a molecule and the arrangement of valence electrons around atoms.
HSH in an electron dot diagram likely refers to a molecule of hydrogen sulfide. In the diagram, HSH would represent the arrangement of the atoms in the molecule, where "H" represents hydrogen and "S" represents sulfur. Each dot around the atom symbol represents a valence electron.
In the electron dot diagram for a sulfur ion, there would be eight dots represented. This is because sulfur typically forms an ion with a 2- charge, so it needs two more electrons to achieve a full outer shell of eight electrons.
Sulfur is in group XVI (or 6A) and so has 6 valence electrons. The electron dot diagram for S would thus have to show (b) six dots.
The Lewis dot diagram for SO2 shows sulfur in the center with two oxygen atoms attached, each with two pairs of electrons around them. The sulfur atom has one pair of electrons and one lone electron.
An electron dot diagram, also known as Lewis dot diagram, uses dots to represent the valence electrons of an atom.
1. An electron dot diagram can show you that the symbols for an element surrounded by dots. Each dot stands for one valence electron.
There are two types of diagrams one is the Lewis diagram the other is the Electron dot diagram. To make the electron dot diagram you put the electron symbol and put a dot on one of the sides for each period (you don't count the middle section.) . . :Ne: = Neon dot diagram ' '